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FZUS54 KLCH 232009
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Coastal Waters Forecast
National Weather Service Lake Charles LA
309 PM CDT Sun Aug 23 2026

Coastal waters from the Lower Atchafalaya River LA to High
Island TX out 60 nautical miles including Sabine and
Calcasieu Lakes and Vermilion and Cote Blanche Bays

Seas are provided as a range of the average height of the
highest one third of the waves, along with the occasional
height of the average highest ten percent of the waves.

GMZ400-240900-
309 PM CDT Sun Aug 23 2026

.Synopsis for Lower Atchafalaya River LA to High Island TX out
60 NM including Sabine and Calcasieu Lakes and Vermilion and Cote
Blanche Bays...

Light onshore winds will persist through the week with seas ranging
from 1-2 feet. Precipitation chances return across the coastal
waters Thursday into next weekend.

$$

GMZ430-240900-
Sabine Lake-
309 PM CDT Sun Aug 23 2026

.TONIGHT...Southwest winds 5 to 10 knots. Lake waters light chop.
A slight chance of showers and thunderstorms early this evening.
.MONDAY...Southwest winds 5 to 10 knots. Lake waters light chop.
.MONDAY NIGHT...Southwest winds 5 to 10 knots. Lake waters light
chop.
.TUESDAY...Southwest winds 5 to 10 knots. Lake waters light chop.
.TUESDAY NIGHT...Southwest winds 5 to 10 knots. Lake waters light
chop.
.WEDNESDAY...Southwest winds 5 to 10 knots. Lake waters light
chop.
.WEDNESDAY NIGHT...Southwest winds 5 to 10 knots. Lake waters
light chop.
.THURSDAY...Southwest winds 5 to 10 knots. Lake waters light
chop. A slight chance of showers and thunderstorms in the
afternoon.
.THURSDAY NIGHT...Southwest winds 5 to 10 knots. Lake waters
light chop. A slight chance of showers and thunderstorms.
.FRIDAY...Southwest winds around 5 knots, becoming south in the
afternoon. Lake waters light chop. A chance of showers and
thunderstorms.
.FRIDAY NIGHT...South winds 5 to 10 knots, diminishing to around
5 knots after midnight. Lake waters light chop.

Winds and waves higher in and near thunderstorms.

$$

GMZ432-240900-
Calcasieu Lake-
309 PM CDT Sun Aug 23 2026

.TONIGHT...Southwest winds 5 to 10 knots. Lake waters light chop.
.MONDAY...Southwest winds 5 to 10 knots. Lake waters light chop.
.MONDAY NIGHT...Southwest winds 5 to 10 knots. Lake waters light
chop.
.TUESDAY...Southwest winds 5 to 10 knots. Lake waters light chop.
.TUESDAY NIGHT...Southwest winds 5 to 10 knots. Lake waters light
chop.
.WEDNESDAY...Southwest winds 5 to 10 knots. Lake waters light
chop.
.WEDNESDAY NIGHT...Southwest winds 5 to 10 knots. Lake waters
light chop.
.THURSDAY...Southwest winds 5 to 10 knots. Lake waters light
chop. A slight chance of showers and thunderstorms in the
morning, then a chance of showers and thunderstorms in the
afternoon.
.THURSDAY NIGHT...Southwest winds 5 to 10 knots. Lake waters
light chop. A slight chance of showers and thunderstorms in the
evening, then a chance of showers and thunderstorms after
midnight.
.FRIDAY...Southwest winds 5 to 10 knots. Lake waters light chop.
A chance of showers and thunderstorms.
.FRIDAY NIGHT...South winds 5 to 10 knots, diminishing to around
5 knots after midnight. Lake waters light chop.

Winds and waves higher in and near thunderstorms.

$$

GMZ435-240900-
Vermilion and West Cote Blanche Bays-
309 PM CDT Sun Aug 23 2026

.TONIGHT...Southwest winds 5 to 10 knots. Bay waters light chop.
.MONDAY...Southwest winds 5 to 10 knots. Bay waters light chop. A
slight chance of showers and thunderstorms in the afternoon.
.MONDAY NIGHT...Southwest winds 5 to 10 knots. Bay waters light
chop.
.TUESDAY...Southwest winds 5 to 10 knots. Bay waters light chop.
A chance of showers and thunderstorms in the afternoon.
.TUESDAY NIGHT...Southwest winds 5 to 10 knots. Bay waters light
chop.
.WEDNESDAY...Southwest winds 5 to 10 knots. Bay waters light
chop. A chance of showers and thunderstorms in the afternoon.
.WEDNESDAY NIGHT...Southwest winds 5 to 10 knots. Bay waters
light chop. A slight chance of showers and thunderstorms after
midnight.
.THURSDAY...Southwest winds 5 to 10 knots. Bay waters light chop.
A chance of showers and thunderstorms in the morning, then
showers and thunderstorms likely in the afternoon.
.THURSDAY NIGHT...Southwest winds around 5 knots. Bay waters
smooth. A slight chance of showers and thunderstorms in the
evening, then a chance of showers and thunderstorms after
midnight.
.FRIDAY...Southwest winds around 5 knots. Bay waters smooth. A
chance of showers and thunderstorms.
.FRIDAY NIGHT...South winds around 5 knots. Bay waters smooth. A
slight chance of showers and thunderstorms after midnight.

Winds and waves higher in and near thunderstorms.

$$

GMZ436-240900-
Atchafalaya and East Cote Blanche Bays-
309 PM CDT Sun Aug 23 2026

.TONIGHT...Southwest winds 5 to 10 knots. Bay waters light chop.
.MONDAY...West winds 5 to 10 knots. Bay waters light chop. A
slight chance of showers and thunderstorms in the afternoon.
.MONDAY NIGHT...Southwest winds 5 to 10 knots. Bay waters light
chop.
.TUESDAY...West winds 5 to 10 knots. Bay waters light chop. A
slight chance of showers and thunderstorms in the morning, then a
chance of showers and thunderstorms in the afternoon.
.TUESDAY NIGHT...Southwest winds 5 to 10 knots. Bay waters light
chop.
.WEDNESDAY...West winds around 5 knots. Bay waters smooth. A
chance of showers and thunderstorms in the afternoon.
.WEDNESDAY NIGHT...Southwest winds 5 to 10 knots. Bay waters
light chop. A slight chance of showers and thunderstorms after
midnight.
.THURSDAY...Southwest winds 5 to 10 knots. Bay waters light chop.
A chance of showers and thunderstorms in the morning, then
showers and thunderstorms likely in the afternoon.
.THURSDAY NIGHT...Southwest winds around 5 knots. Bay waters
smooth. A slight chance of showers and thunderstorms in the
evening, then a chance of showers and thunderstorms after
midnight.
.FRIDAY...Southwest winds around 5 knots. Bay waters smooth. A
chance of showers and thunderstorms.
.FRIDAY NIGHT...South winds around 5 knots. Bay waters smooth. A
chance of showers and thunderstorms after midnight.

Winds and waves higher in and near thunderstorms.

$$

GMZ450-240900-
Coastal waters from Cameron LA to High Island TX out 20 NM-
309 PM CDT Sun Aug 23 2026

.TONIGHT...Southwest winds 10 to 15 knots. Seas around 2 feet.
Wave Detail: Southwest 2 feet at 3 seconds.
.MONDAY...Southwest winds 10 to 15 knots. Seas around 2 feet.
Wave Detail: Southwest 2 feet at 4 seconds.
.MONDAY NIGHT...Southwest winds 10 to 15 knots. Seas around
2 feet. Wave Detail: Southwest 2 feet at 4 seconds.
.TUESDAY...Southwest winds 10 to 15 knots, diminishing to 5 to
10 knots in the afternoon. Seas around 2 feet. Wave Detail:
Southwest 2 feet at 4 seconds.
.TUESDAY NIGHT...Southwest winds 10 to 15 knots. Seas around
2 feet. Wave Detail: South 2 feet at 4 seconds.
.WEDNESDAY...Southwest winds 10 to 15 knots. Seas around 2 feet.
Wave Detail: Southwest 2 feet at 4 seconds.
.WEDNESDAY NIGHT...Southwest winds 10 to 15 knots. Seas around
2 feet.
.THURSDAY...Southwest winds 10 to 15 knots. Seas around 2 feet. A
slight chance of showers and thunderstorms.
.THURSDAY NIGHT...Southwest winds 10 to 15 knots. Seas around
2 feet. A slight chance of showers and thunderstorms after
midnight.
.FRIDAY...Southwest winds 5 to 10 knots. Seas around 2 feet in
the morning, then 1 foot or less. A chance of showers and
thunderstorms, mainly in the morning.
.FRIDAY NIGHT...South winds 5 to 10 knots. Seas 1 foot or less. A
slight chance of showers and thunderstorms after midnight.

Winds and seas higher in and near thunderstorms.

$$

GMZ452-240900-
Coastal waters from Intracoastal City to Cameron LA out 20 NM-
309 PM CDT Sun Aug 23 2026

.TONIGHT...Southwest winds 10 to 15 knots. Seas around 2 feet.
Wave Detail: Southwest 2 feet at 4 seconds.
.MONDAY...Southwest winds 5 to 10 knots. Seas around 2 feet in
the morning, then 1 foot or less. Wave Detail: Southwest 2 feet
at 4 seconds, becoming southwest 1 foot at 4 seconds.
.MONDAY NIGHT...Southwest winds 10 to 15 knots. Seas around
2 feet. Wave Detail: Southwest 2 feet at 4 seconds.
.TUESDAY...Southwest winds 5 to 10 knots. Seas around 2 feet in
the morning, then 1 foot or less. Wave Detail: Southwest 2 feet
at 4 seconds, becoming southwest 1 foot at 4 seconds.
.TUESDAY NIGHT...Southwest winds around 10 knots. Seas around
2 feet. Wave Detail: Southwest 2 feet at 4 seconds.
.WEDNESDAY...Southwest winds 5 to 10 knots. Seas around 2 feet in
the morning, then 1 foot or less. Wave Detail: Southwest 2 feet
at 4 seconds, becoming southwest 1 foot at 4 seconds.
.WEDNESDAY NIGHT...Southwest winds 10 to 15 knots. Seas around
2 feet.
.THURSDAY...Southwest winds 10 to 15 knots. Seas around 2 feet. A
chance of showers and thunderstorms.
.THURSDAY NIGHT...Southwest winds around 10 knots. Seas around
2 feet. A slight chance of showers and thunderstorms in the
evening, then a chance of showers and thunderstorms after
midnight.
.FRIDAY...Southwest winds 5 to 10 knots. Seas around 2 feet in
the morning, then 1 foot or less. A chance of showers and
thunderstorms, mainly in the morning.
.FRIDAY NIGHT...South winds 5 to 10 knots. Seas 1 foot or less. A
slight chance of showers and thunderstorms after midnight.

Winds and seas higher in and near thunderstorms.

$$

GMZ455-240900-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA out 20 NM-
309 PM CDT Sun Aug 23 2026

.TONIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: Southwest 1 foot at 3 seconds.
.MONDAY...West winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: Southwest 1 foot at 3 seconds.
.MONDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or
less. Wave Detail: Southwest 1 foot at 3 seconds.
.TUESDAY...West winds 5 to 10 knots, diminishing to around
5 knots in the afternoon. Seas 1 foot or less. Wave Detail:
Southwest 1 foot at 3 seconds. A chance of showers and
thunderstorms in the afternoon.
.TUESDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or
less. Wave Detail: Southwest 1 foot at 3 seconds.
.WEDNESDAY...West winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: Southwest 1 foot at 3 seconds. A slight chance of showers
and thunderstorms in the afternoon.
.WEDNESDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or
less. A slight chance of showers and thunderstorms after
midnight.
.THURSDAY...West winds 5 to 10 knots. Seas 1 foot or less. A
chance of showers and thunderstorms.
.THURSDAY NIGHT...Southwest winds around 5 knots. Seas 1 foot or
less. A slight chance of showers and thunderstorms in the
evening, then a chance of showers and thunderstorms after
midnight.
.FRIDAY...Southwest winds around 5 knots. Seas 1 foot or less. A
chance of showers and thunderstorms.
.FRIDAY NIGHT...South winds around 5 knots. Seas 1 foot or less.
A chance of showers and thunderstorms after midnight.

Winds and seas higher in and near thunderstorms.

$$

GMZ470-240900-
Coastal waters from Cameron LA to High Island TX from 20 to 60 NM-
309 PM CDT Sun Aug 23 2026

.TONIGHT...Southwest winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: Southwest 2 feet at 4 seconds.
.MONDAY...Southwest winds 5 to 10 knots. Seas around 2 feet in
the morning, then 1 foot or less. Wave Detail: Southwest 2 feet
at 4 seconds, becoming southwest 1 foot at 4 seconds.
.MONDAY NIGHT...South winds 5 to 10 knots, becoming southwest
10 to 15 knots after midnight. Seas around 2 feet. Wave Detail:
Southwest 2 feet at 4 seconds.
.TUESDAY...Southwest winds 5 to 10 knots. Seas around 2 feet in
the morning, then 1 foot or less. Wave Detail: Southwest 2 feet
at 4 seconds, becoming southwest 1 foot at 4 seconds.
.TUESDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: South 2 feet at 4 seconds.
.WEDNESDAY...Southwest winds 5 to 10 knots. Seas around 2 feet in
the morning, then 1 foot or less. Wave Detail: Southwest 2 feet
at 4 seconds, becoming southwest 1 foot at 4 seconds.
.WEDNESDAY NIGHT...South winds 5 to 10 knots, becoming southwest
10 to 15 knots after midnight. Seas around 2 feet.
.THURSDAY...Southwest winds 5 to 10 knots. Seas around 2 feet. A
slight chance of showers and thunderstorms in the morning.
.THURSDAY NIGHT...Southwest winds 5 to 10 knots. Seas around
2 feet. A slight chance of showers and thunderstorms after
midnight.
.FRIDAY...Southwest winds 5 to 10 knots. Seas around 2 feet in
the morning, then 1 foot or less. A chance of showers and
thunderstorms in the morning.
.FRIDAY NIGHT...South winds 5 to 10 knots. Seas 1 foot or less,
then around 2 feet after midnight.

Winds and seas higher in and near thunderstorms.

$$

GMZ472-240900-
Coastal waters from Intracoastal City to Cameron LA from 20 to
60 NM-
309 PM CDT Sun Aug 23 2026

.TONIGHT...Southwest winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: Southwest 1 foot at 4 seconds.
.MONDAY...Southwest winds 5 to 10 knots. Seas around 2 feet in
the morning, then 1 foot or less. Wave Detail: Southwest 2 feet
at 4 seconds, becoming southwest 1 foot at 4 seconds.
.MONDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or
less, then around 2 feet after midnight. Wave Detail: Southwest
1 foot at 4 seconds, becoming southwest 2 feet at 4 seconds.
.TUESDAY...Southwest winds 5 to 10 knots. Seas around 2 feet in
the morning, then 1 foot or less. Wave Detail: Southwest 2 feet
at 4 seconds, becoming southwest 1 foot at 4 seconds.
.TUESDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or
less, then around 2 feet after midnight. Wave Detail: Southwest
1 foot at 4 seconds, becoming southwest 2 feet at 4 seconds.
.WEDNESDAY...West winds 5 to 10 knots. Seas around 2 feet in the
morning, then 1 foot or less. Wave Detail: Southwest 2 feet at
4 seconds, becoming southwest 1 foot at 4 seconds.
.WEDNESDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or
less, then around 2 feet after midnight.
.THURSDAY...Southwest winds 5 to 10 knots. Seas around 2 feet. A
slight chance of showers and thunderstorms.
.THURSDAY NIGHT...Southwest winds 5 to 10 knots. Seas around
2 feet. A chance of showers and thunderstorms after midnight.
.FRIDAY...Southwest winds 5 to 10 knots. Seas around 2 feet in
the morning, then 1 foot or less. A chance of showers and
thunderstorms in the morning.
.FRIDAY NIGHT...South winds 5 to 10 knots. Seas 1 foot or less. A
slight chance of showers and thunderstorms after midnight.

Winds and seas higher in and near thunderstorms.

$$

GMZ475-240900-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA from 20 to 60 NM-
309 PM CDT Sun Aug 23 2026

.TONIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: West 1 foot at 4 seconds.
.MONDAY...West winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: West 1 foot at 3 seconds.
.MONDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or
less. Wave Detail: West 1 foot at 4 seconds.
.TUESDAY...West winds 5 to 10 knots, diminishing to around
5 knots in the afternoon. Seas 1 foot or less. Wave Detail:
Southwest 1 foot at 3 seconds. A chance of showers and
thunderstorms in the afternoon.
.TUESDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or
less. Wave Detail: Southwest 1 foot at 4 seconds.
.WEDNESDAY...West winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: Southwest 1 foot at 3 seconds. A slight chance of showers
and thunderstorms in the afternoon.
.WEDNESDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or
less. A slight chance of showers and thunderstorms after
midnight.
.THURSDAY...West winds 5 to 10 knots. Seas 1 foot or less. A
chance of showers and thunderstorms.
.THURSDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or
less. A chance of showers and thunderstorms after midnight.
.FRIDAY...Southwest winds 5 to 10 knots, becoming west in the
afternoon. Seas 1 foot or less. A chance of showers and
thunderstorms, mainly in the morning.
.FRIDAY NIGHT...Southeast winds around 5 knots. Seas 1 foot or
less. A chance of showers and thunderstorms after midnight.

Winds and seas higher in and near thunderstorms.

$$